http://WhereGroup.com
*/
/**
* Gets an image for layer or wmc preview.
* Convert the image to the right format and save it in the @preview_dir
*/
require_once(dirname(__FILE__)."/../php/mb_validateSession.php");
$user_id = Mapbender::session()->get("mb_user_id");
$source_id = $_POST['source_id'];
//set variables
$width;
$height;
$new_name;
//get the http referer and the service (wms,wmc)
$referer = explode('=',$_SERVER["HTTP_REFERER"]);
$service = end($referer);
// get the file informations
$info = pathinfo($_FILES['image']['name']);
// get the extension of the file
$ext = $info['extension'];
// set the new fileName
$type = $_POST['type'];
if ($type == 'wmc') {
$new_name = $source_id."_wmc_preview.jpg";//.$ext;
}
else {
$new_name = $source_id."_layer_map_preview.jpg";//.$ext;
}
$new_image = dirname(__FILE__)."/../geoportal/preview/".$new_name;
if ($_POST["upload_action"] === "upload") {
// get the ímage
$image = $_FILES['image']['tmp_name'];
//resize the image to 200px * 200px
// get image size
$size = Getimagesize($image);
$images_orig;
//create an gd-image-object from the source file
switch ($ext) {
case 'jpg':
$images_orig = ImageCreateFromJPEG($image);
break;
case 'jpeg':
$images_orig = ImageCreateFromJPEG($image);
break;
case 'png':
$images_orig = ImageCreateFrompng($image);
break;
case 'gif':
$images_orig = ImageCreateFromgif($image);
break;
default:
return;
break;
}
//if width and height are to big
if ($size[0] >= 200 || $size[1] >= 200) {
// width of the origin image
$photoW = ImagesX($images_orig);
// height of the origin image
$photoH = ImagesY($images_orig);
// create new image with the calculated size
$images_target = ImageCreateTrueColor(200, 200);
//fill the new image with transparency background
$color = imagecolorallocatealpha($images_target, 255, 255, 255, 0); //fill white background
imagefill($images_target, 0, 0, $color);
imagealphablending( $images_target, false );
imagesavealpha($images_target, true);
//set the new image width and height
if ($size[0] > $size[1] || $size[0] == $size[1]) {
$width = 200;
$height = round($width*$size[1]/$size[0]);
// calculate the height of the src_image in the target_image
$startHeight = round((200-$height)/2);
// resize the image:
ImageCopyResampled($images_target, $images_orig, 0, $startHeight, 0, 0, $width, $height, $photoW, $photoH);
}else{
$height = 200;
$width = round($height*$size[0]/$size[1]);
$startWidth = round((200-$width)/2);
ImageCopyResampled($images_target, $images_orig, $startWidth, 0, 0, 0, $width, $height, $photoW, $photoH);
}
// move File to the new target directory --> always save as png
imagejpeg($images_target,$new_image);
// free space
ImageDestroy($images_orig);
ImageDestroy($images_target);
echo "![](\""."../geoportal/preview/".$new_name."\")
";
} // if image-width and height are to small
else if($size[0] < 200 && $size[1] < 200){
//set the new image width
$width = $size[0];
// scale the height
$height = $size[1];
// width of the origin image
$photoW = ImagesX($images_orig);
// height of the origin image
$photoH = ImagesY($images_orig);
// create new image with the calculated size
$images_target = ImageCreateTrueColor(200, 200);
//fill the new image with transparency background
$color = imagecolorallocatealpha($images_target, 255, 255, 255, 0); //fill white background
imagefill($images_target, 0, 0, $color);
imagealphablending( $images_target, false );
imagesavealpha($images_target, true);
// calculate the height of the src_image in the target_image
$startHeight = round((200-$height)/2);
$startWidth = round((200-$width)/2);
// resize the image
ImageCopyResampled($images_target, $images_orig, $startWidth, $startHeight, 0, 0, $width, $height, $photoW, $photoH);
// move File to the new target directory --> always save as png
imagejpeg($images_target,$new_image);
// free space
ImageDestroy($images_orig);
ImageDestroy($images_target);
echo "";
}
} else if ($_POST["upload_action"] === "delete") {
unlink($new_image);
echo "![](\"../geoportal/preview/keinevorschau.jpg\")
";
} else if ($_POST["upload_action"] === "getImage") {
if(!file_exists($new_image)) {
echo "";
} else {
echo "![](\"../geoportal/preview/")
";
}
}